This paper presents a new class of dual-, tri- and quad-band BPF by using proposed open stub-loaded shorted stepped-impedance resonator (OSLSSIR). The OSLSSIR consists two-end-shorted three-section resistor (SIR) with two identical stubs loaded at its impedance junctions. Two 50- Ω tapped lines are directly connected to sections the SIR serve as I/O ports. As electrical lengths increase, many more transmission poles (TPs) zeros (TZs) can be shifted or excited within interested frequency...

A new type of microstrip dual-mode dual-band bandpass filter (BPF) using a single quadruple-mode resonator (QMR) is proposed in this paper. The classical even-/odd-mode method applied to analyze the characteristics resonator, which shows that it has two pairs symmetrical resonant modes. Owing inherent characteristic and source-load coupling, four transmission zeros can be produced these modes divided groups, resulting BPF with each passband. As examples, BPFs, Filter central frequencies...

In this letter, a novel compact ultra-wideband (UWB) microstrip bandpass filter (BPF) with notched band is presented by using the proposed radial stub loaded resonator (RSLR). The RSLR, on one hand, able to control two tunable transmission zeros separately and other has ability provide band. addition, vertical dimension of UWB BPF can be significantly reduced as compared based conventional stub-loaded (SISLR). For validation, BPFs, without at 8.0 GHz for rejecting satellite-communication...

A compact quad-band bandpass filter utilising the proposed quad-mode resonator is presented. The resonator, which has four tunable symmetrical resonant poles, can be treated as a two-side open-circuit stepped-impedance with short-circuit stubs in its low-impedance sections. With multi-paths propagation mode configuration of two resonators, transmission zeros among each passband are generated to improve selectivity and achieve high isolation. As an example, centring at 1.9/2.8/4.3/5.2GHz...

Previous 1D convolutional neural networks (1D CNN) models for vibration fault diagnosis have high computational complexity and poor interpretability, which cannot meet the higher requirements of model storage, efficiency reliability airborne portable devices. Considering these challenges, an Explainable Lightweight CNN (ELCNN) based on Square Global Average Pooling (S-GAP) improved signals is proposed. The feature extraction classification layers are optimized to minimize parameters improve...

This letter presents a novel lowpass filter (LPF) structure which consists of section high-impedance microstrip line (HIML) with pair radial stubs (RSs) loaded at its center and stepped-impedance open (SIOSs) on both ends HIML. The RSs HIML exhibits property has wide stopband. SIOSs not only can improve the roll-off rate LPF significantly but also is able to extend Based such structure, highpass shorted HIMLs are paralleled sides construct wideband bandpass (BPF) To validate proposed method,...

Large language models (LLMs) exhibit the emergent ability of few-shot in-context learning (ICL), allowing them to learn from demonstrations in simple prompts without task-specific training. However, applying ICL biological sequences for classification, especially computational immunology, remains underexplored. Here, we apply with 18 general-purpose LLMs across five families three antibody characterization scenarios, including predicting humanness, specificity, and isotype. We evaluate...

Time-modulated array (TMA) has garnered significant interest in recent years as an alternative to phased arrays for certain applications. The TMA offer advantages such simplicity and high accuracy when employed scanning mode. However, a limitation of is the constrained signal bandwidth, which must be lower than modulation frequency avoid aliasing. This constraint can impede progress wideband range-Doppler (RD) estimation. To address this problem, article proposes structure processing method...

This letter presents a new stubs loaded stepped impedance resonator (SsLSIR) to design single-/dual-wideband bandpass filter (BPF). The proposed SsLSIR exhibits multiple tunable transmission zeros (TZs) and poles (TPs), which can be arranged build up single/dual-wideband BPF. single-band BPF has central frequency of 1.91 GHz with <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${-}3$</tex></formula>...

In this letter, admittance matrix and arbitrary phase delay is investigated for the design of sub-miniaturized Wilkinson power divider (WPD). A theoretical model based on derived discussed to find relationship among delay, characteristic impedance electrical length WPD. The presented method validated by building a modified configuration which centered at 500 MHz with 14.18% fractional bandwidth (FBW) using both microstrip lines lumped elements. measured results show that proposed WPD...

An ultra-wideband (UWB) bandpass filter (BPF) with two cascaded cross-shaped resonators is proposed and implemented. As the starting work of this letter, a resonator wide passband introduced. With use even- odd-mode approach, initial characterized designed to build up UWB BPF. And then, BPF fabricated satisfy Federal Communications Commission indoor mask.

An ultra-wideband (UWB) bandpass filter (BPF) with multiple ultra narrow notched bands is presented in this paper. The band inside the UWB passband implemented by embedding a pair of parallel coupled lines into interference line. central frequency and bandwidth can be easily controlled electrical length coupling coefficient lines. For verification, two BPFs, I single at 5.8 GHz II dual 8.0 respectively, are designed, simulated measured. Good agreement observed between measurements...

A cross-shaped ultra-wideband (UWB) bandpass filter (BPF) with a notched band and sharp skirt is presented. The basic UWB BPF resonator which comprises two shunt quarter-wavelength short-circuited stubs. Two embedded open stubs are used to create narrow at 8.0 GHz. realised by using step-impedance open-circuited lines. Good insertion/return losses achieved as demonstrated in both simulation experiment.

An ultra-wideband (UWB) bandpass filter (BPF) with a novel structure and super compact size is presented. This UWB BPF designed based on three-line coupled resonator (TLCR), which was used as feedlines in the past. The TLCR has characteristics of simple wide passband, thus it very suitable for design. Then, four bent stubs are loaded to improve performance this filter. Both simulated measured results show that good miniaturised by more than 70% compared most reported BPFs.

Autophagy is involved in the development of numerous illnesses, including ischemia/reperfusion (I/R). Endothelial nitric oxide synthase (eNOS) participates protective effects ischemic postconditioning (IPostC). However, it remains unclear whether eNOS-mediated autophagy serves as a critical role IPostC hearts mice, protecting against I/R injury. In present study, mice with left anterior descending coronary artery ligation were studied models. H9c2 cells underwent exposure to...

This paper presents a new dual-mode stub-loaded resonator, which consists of microstrip resonator with internal coupled lines and an open-circuited stub. Based on the odd- even-mode equivalent circuits, resonant characteristics proposed are investigated. It is found that fundamental frequency can be ∞exibly controlled while odd-mode remains unafiected. Then, based three compact bandpass fllters, namely fller A, fllter B C, designed, fabricated measured to validate design concept. Filters A...

In this article, a joint direction of arrival (DOA) and distance estimation (JDDE) method using novel time-domain wideband (WB) synthesis signal system is proposed. contrast to traditional (TDS) methods, which transmit subpulses separately, uniform linear array (ULA) used, all stepped frequency-modulated (SLFM) are transmitted simultaneously. The echo mixed with each the corresponding antenna filtered separate single-frequency components from different targets elements for synthesis....

In this paper, the covert age of information (CAoI), which characterizes timeliness and covertness performance communication, is first investigated in short-packet communication with time modulated retrodirective array (TMRDA). Specifically, TMRDA designed to maximize antenna gain target direction while side lobe sufficiently suppressed. On basis, constraint CAoI are derived closed form. To facilitate transmission design, transmit power block-length jointly optimized minimize CAoI,...

This paper presents a new ultra-wideband bandpass (UWB) filter (BPF) based on the half-wavelength (λ/2) stepped-impedance stub-loaded resonator (SISLR). Classical even- and odd-mode analysis shows that has multiple transmission poles two tunable zeros both sides of passband. In order to reject interfered signals, technique generating notched band inside UWB passband is studied. As examples, BPFs, one without other with dual narrow bands at 5.8/8.0 GHz, are designed, fabricated measured. The...

A novel ultra-wideband (UWB) bandpass filter (BPF) structure is presented. The presented consists of two quarter-wavelength coupled-line series in the centre position and shorted shunts on both sides. new UWB shows multiple-mode resonant characteristic shunt coupled-lines can provide transmission zeros sides passband. As a validation, microstrip BPF was designed fabricated. Sharp deep rejection achieved lower upper stopband. In addition, notched band at 8.0 GHz for rejecting satellite...